Steam-condensing and vacuum-producing apparatus.



D. B. MORISON. STEAM counmsmu AND v cuum PRODUCING APPARATUS.APPLICATION FILED DBO.18,1912.

1,085,152, Patnted Jan. 27, 191A.

3 SHEETS-SHEET 1.

. D. B. MORISON.

STEAM CONDENSI'NG AND VACUUM PRODUCING APPARATUS.

APPLICATION TILED DEC.18, 1912.

1 085,} 52, Patented Jan. 27, 1914.

3 BHEETSSHEET 2.

D. B. MORISON. STEAM CONDBNSINGAND VACUUM PRODUCING APPARATUS.APPLICATION EILED DEG. 18, 1912.

1,085,1 52, Patented Jan. 27, 1914.

l 6 a SHEETS-SHEET 3.

DONALD BARNES MORISON, OF HARTLEPOOL, ENGLAND.

STEAM-CONDENSING- AND VACUU'III'PIRODUEIING- APPARATUS.

Speeification of Letters Patent.

Katented Jan. 27,1 91 n.

Application filed December 18, 1912. Serial No. 737,464.

To all 7lf/i0717- it may (zonm'rn Be it known thiit I, Doxann Bums MoireSON, a subject or the King of Great Britain and lreland, residing atllarllepool, in the 1 l county of Durham, England have inventedImprovements in and Relating to Steanr Condensirigand VaeuunnProdiicingA ppa- I ratus, of which the following is a specifica- 1 tion. l Thisinvention relates to iinprm'einents in steam condensing plant whereinair is prii marilv Withdrawn from a condenser by :1 steanrjet anddischarged to ihe atmosphere by an expelling device. in such apparatuswherein steam which has previously doneg Work in an engine, as forexample the exhaust steam from an auxiliury euginm .5 supplied to thesteam iel u'itlnlrawing airl from the. ,'f'll\'l("l'l (l. the exhauststeam :H'Mlable is often variable in pressure and in quantity. and olengreater in am unt than is required h the steam jet.

The ohjeer of this invention to increase 3 the elli icuey of -urhuppniuiiusand for this purp r a iupplv of steam i {alien pret'erl I l ll l entiull': from the auxiliary (.Xllill'ml system and deliver-ml inthe leain jet \vuhdrau'n'ig air from the conden er, and when thisteam oithe stennw noporlion ot' it as umuhe onuin-aide uldmed tor heat 1 l'oi'lHZllulL lei-d \'\'!i(I on i-nni'zurieiuly. admitted I f i u .---!e:unturhine, r it (Xllitlhll SlttiHl l :l 'li o'." it a is pruel'ieillv 'umdwiielieially.

inventi n wherein e.\'- huust steam rom t al liur l 1l!illl i.iillllsystem or roan a :IlXlllulf. whau t steam pipe uti i-d in a sir-am Per wthdrawing air from a condenser and which i thereaft r inrp lhal to theatm sphere hr ir discharging: means, i c nnect to the a "iarv exhauststrain s siein or to the auxiliary e haust ienna pip a valve which is soar-; ranged that hen the quantity of exhaust steam is in t is snppi' dto the Slanlk'l jet. utilized to heat Water "in a into which sure, isrem-lied. the remainder or such a i'ii l'd is or nor in quantity thancan he ulilizedl in ih rltilll'l jet and a-predeleriniued presthe lowi-ri---ure i the whol eoureiue in one l'oi' 2 Water; it

Water of condensation or water intended for boiler feeding purposes isdischarged. The tank or vessel may be in the form of a di rectcontactheater to which thi "eed 'ater is iilelivereih as for example. directlyby a pump, or it may he hy a pump which also delivers water to an airdischarging device whit-h expels to the alumsphere the air withdrawn orthe steam jet.

When in snliieient quantity to justify its use for power production, anyexhaust steam which is not utilized in the steam jet for withdrawing airfrom the condenser, may pass through a suitable 'alve and be utilized inthe low pres ure sertiou ot' a steam turbine us hci'einhetore referredto. or lheslerun not used in the steam jet may he preferentiallysupplied to a water heating" device and means provided \VlltI'OlJ) whenthe steam ES grater in quantity than can he nliilixed ii steam iel andfor heating into the low pressure side oi a steam lurhine. or when suchan arrnng'einent is unde irable. it may be discharged into the condenseror elsewhere as reu u ired.

The acrompanyin; illustrative drawings show more or lessdiagranunatieally various forms o l apparatus according to the presentinvention.

In Figure l a is a condenser from which air is primarily Withdrawn by asteam jet device Z) which receives a preferential supply v of steamthrough the pipe in from the exhaust-r of tin uxiliary turbine thatdrives the pump a Ht ivering water under pressure to the water jetnozzles in the Water jet ejector n h which the air Withdrawn from therondcnser l the steam i is i'lischarged to :u niosphere The isshaustpipe 92 l rom the turhine (f is also connected to the 1 spring loadedvalve (Z \vhieh is so arranged hr feed water therein.

in Fig, .Lthe auxiliary exhaust steam, 11s 'll'C: previous arrangement,18 preferensupplied to the steam get device I), and

when it is greater in amount than can be utilized in the steam jet forwithdrawing air from the condenser a, the pressure in the exhaust systemrises until a predetermined limit is reached when the valve '1), whichis of suitable construction, opens and steam passes through the pipe uinto the low pressure section of the turbine w. In this example, theWater of condensation is discharged from the condenser into the tank 29by the rotary-pumps w.

Fig. 3 is'a modification of the arrangement shownin Fig. 2, in which thewater of condensation is withdrawn from the condenser by a pump a: thatdischarges into the suction pipe of the air pump 1 in which the airwithdrawn from the condenser by the steam jet device 6 is expelled bywater discharged from the periphery of a rotary device and is deliveredtogether -with the water of condensation from the pump a: into the tankp. Exhaust steam from auxiliary machinery is deliveredinto the pipe nand is preferentially supplied to the steam jet device I), but when ingreater quantity than can be utilized therein it passes through thevalve (Z and nozzle Z into the heating compartment f of the tank pwherein it 1s used for heating the feed water which is there afterwithdrawn through the pipe 2. The auxiliary exhaust system is alsoconnected by the valve '1) to the turbine w and by the valve (Z to thecondenser a the arrangement being such that when 'the'steam not utilizedin the steam jet is greater than that required for heating the feedwaterand a predetermined higher pressure is reached, it passes by theautomatically operated valves 4) and (JI into the turbine w or into thecondenser a or it maybe concurrently into both the turbine and -thecondenser. The pipe 9 con necting the auxiliary exhaust system with theheating compartment f may be provided with a valve 2' that isautomatically con-' trolled by a temperature regulating device so thatthe supply of heating steam passing through the pipe gis controlled inaccordance with the temperature of the feed water.

The tank in which the feed water -1S heated may be in the form of aclosed vessel as shown in Fig. 4 wherein it is an elevated directcontact heater to which thewater of condensation is delivered by thepump ac and from which it is discharged to the boilers by the rotaryfeed pump a. Exhaust steam from the turbine a driving the pumps 2: and mand also the pump it which circulates the water through the Water jetejecting device e, is preferentially supplied, together it may be withother auxiliary steam entering the system through the branch 11. to thesteam jet device 6, and when the steam is greater in quantity than canbe used in the steam jet and the pressure rises, it passesthrough thepipe 9 and loaded valve (Z into the heater k. The pipe 9 may also beprovided with a valve (Z which is loaded to a higher pressure than thevalve d and through which the steam escapes to the atmosphere when it isgreater in quantity thancan be beneficially utilized in the steam jet band in the heater it. Make up feed water, may if desired be deliveredinto the tank 79 and discharged by the pump it to the heater 7a througha valve '21 which is controlled'bya float in the tan'kp.

Fig. 5 is another arrangement of my invention in which the pipe 9 isconnected to a regulating valve 1- that is operated by a float 9 so thatwhen the supply of water delivered to the compartment, f is below thenormal amount, or ceases, the steam. supply to the heating nozzle Z isthrottled or ent ofi. The same float '9 may also operate a feed waterdischarge valve 8 in the manner illustrated, whereby when the supply offeed water is variable in quantity the fioat automatically regulates thesupply of steam to the heating nozzle Z concurrently with the regulationof the feed Water discharged through the valve 8 from the tank, or thefloat may control the feed water discharge valve only. In thisarrangement, as in Fig. 4, exhaust steam from the turbine 0 and fromauxiliary machinery is preferentially supplied from the pipes n and n tothe steam jet device 6, and when in greater quantity than can be used inthe steam'jet the pressure rises and steam passes through the valve (linto the tank 7. Should the steam passing through the pipe g be greaterthan that required to be condensed in the tank f, the pressure risesstill farther and steam passes through the valve (Z to the turbine 20,through the valve 21 or into the'condenser a through the valve '05, orit may be into both the turbine and the condenser, a valve (Z beingprovided for the escape of steam to the atmosphere.

Figs. 6 and 7 show detail sectional views of another convenient form ofthe tank 32 illustrated in Figs. .1 to 5. Fig. 6 is a sectionalelevation on the line CC in Fig. 7, and Fig. 7 is a. sectional plan,theupper view being a section on the far side of the tank p on the lineA-A in Fig. 6 and the slower view being a section on the near side ofthe tank on the line BB. The tank comprises the compartments 1, 2 and 3,the compartment 1 having a chamber 4 containing the water jet devices 6,by which the air withdrawn from the condenser by the steam jet devices 5b .is discharged to the atmosphere. The discharge of water from thechamber 4 flows through the ports 5 and sieves 6 into the lower portionof the compartment 1, from whence it is withdrawn through the pipe 7 bythe pump supplying water to the ejectors e, the excess of water, or theamount of water corresponding to the quantity of steam condensed in-thecondenser, flowing over the weir 8 and downwardly through the passage 9and opening 10, into the lower portion of the compartment 2 wherein itis heated and circulated by the nozzles 3 that are supplied with exhauststeam from auxiliary machinery toge her with the steam that is notutilized in the steam jet devices Z). The heated water from thecompartment 2 flows by way of the passage 11, formed in the compartment1, into the compartment- 3 from which the water is withdrawn by a feedpump through the pipe .2. The compartment 3 contains a tloat g whichoperates a valve 12 that is connected to a feedtank by the pipe 16 andto the condenser by the pipe 17, the arrangement being such thatwh'enehrer the water level in the compartment 3 falls below apredetermined limit, wet-er is automatically passed from the feed taiil:through the valve 12 to the condenser'f-from which itis withdrawn by thewater withdrawing pump or pumps which discharge throughthe pipe 14 intothe chamber 4. The compartment 1 is provided with overflow pipes 15, sothat should the sieve become fouled, the water will rise and overflowthrough the pipes 15 into the lower portion of the compartment-.-

What I claim is 1. In combination a, multiple stage turbine, a steamcondenser receiving exhaust steam therefrom, a steam ejector forwithdrawing air from said condenser, a pipe for supplying exhaust steamto said ejector, branch pipe connections leading from said exhaust steamsupply pipe to the low pressure section of the turbine, and a pressurecontrolled valve governing the admission of steam to said branch pipe.

In combination a multiple stage turbine, a steam condenser receivingexhaust steam therefrom, a steam ejector for withdrawing air from saidcondenser. a pipe for supplying exhaust steam to said ejector, a l'r-cdwater heater, branch pipe connections leading from said exhaust steampipe to said feed water heater and the low pressure sec tion of theturbine. and pressure controlled means for governing the How of steamthrough said branch pipe connections.

:3. i combination a multiple stage turbine, a steam condenser receivingexhaust steam therefrom. asteam ejector for withdrawing air from saidcondenser. a pipe for supplying exhaust steam to said ejector, a feedwater heatcn branch pipe connections from said exhaust steam supply pipeto said feed water heater, the low prcssure'seclion ot' the turbine andthe condenser. and pressure. controlled means for controlling thepassage of the exhaust steam through saidbranch pipe connections,substantially as de- 66 nected with said ejector and said feedwaterheater, and an automatic pressure controlled valve for admitting steamto said second device when the pr "re of exhaust steam reaches a predenzd amount.

6. In combination a steam condenser, a steam ejector for withdrawing theair therefrom, a feed water heater, an exhaust steam supply pipe havingbranches connected with said ejector and said feed water heater, anautomatic pressure controlled valve for admitting steam to said seconddevice when the pressure of exhaust steam reaches a predeterminedamount-, a valve in the branch of said supply pipe leading to said feedwater heater, and a float located within the tank and connected to saidvalve for controlling the passage or" exhaust steam thereto.

7. In combination, a.condenser, a steam ejector for withdrawing airtherefrom, a feed water heater, an exhaust steam supply pipe havingbranches leading to said ejector and said feed water heater, a valve insaid branch for controlling the admission of steam to the feed waterheater, a float within the feed water heater for controlling the valve,a valve controlling the water outlet from said heater, and connectionsbetween the float and said last named valve.

S. In combination a condenser, a steam ejector for withdrawing airtherefrom, a feed water heater, a supply pipe for exhaust steam,branches leading" from said exhaust stcam supply pipe to said ejectorand said iced water heater, a valve for controlling the admission ofexhaust steam to the feed water heater from said branch pipe, and athermostat within the feed water heater and connected to said valve foroperating the same.

9. In combination a steam condenser, an air ejector for primarilywithdrawing air therefrom, a tank having a plurality of compartments,water jetmeans for expelling to the atmosphere the air withdrawn by saidsteam cjectonsaid water jet means communicating with one of thecompartments of said tank, a steam engine for driving said water jetmeans, an exhaust steam pipe for said of Durham, England, this 3rd dayof Destcain engine having a branch leading to the ceniber 1912.

steam ejector, anda branch leadin to said I I water tank, and heatingnozzles iii one of DONALD BARNS MORISON the compartments @f said tankreceiving the \Vitnesses:

steam from said second branch.

' HARRY FOTHERJILL, Signed at Vest Hartlepool, in the county JOHN COOK.

